A novel route to dipeptides via noncondensation of amino acids: 2-aminoperfluoropropene as a synthon for trifluoroalanine dipeptides.

2-Aminoperfluoropropene has been prepared by the Mg-promoted defluorinative N-silylation of N-p-methoxyphenyl hexafluoroacetone imine and has been employed as a synthon of trifluoroalanine for the preparation of trifluoroalanine dipeptides.